In: Statistics and Probability
What four different methods are frequently used to collect
data?
14. True or false? Randomization is used to increase bias in a
study. ?
15. What are three key elements of a well-designed
experiment?
16. What problem can be introduced if confounding variables are
present in a study?
17. Why is the validity of an experiment important?
18. What is the purpose of using blinding in a study?
19. You are asked to select a random sample of 10 students from the
class. What must be done before anything else to start the
process?
20. Identify the sampling technique. As part of a quality assurance
program, every seventh car produced on an assembly line is
subjected to additional evaluation.
21. Understanding the reasons. Why is simulation sometimes
necessary when collecting data?